:root{--blue:#2AA9E0;--bright:#53C2F2;--deep:#244C78;--heading:#1C3552;--text:#31485F;--muted:#6B8299;--line:rgba(42,169,224,.16);--pale:#EFF8FF;--bg:#F6FBFF;--gold:#D9B15B;--purple:#6B4FAF}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8;overflow-x:hidden}a{color:var(--deep);text-decoration:none}a:hover{color:var(--blue)}a:focus-visible,button:focus-visible{outline:3px solid #6B4FAF;outline-offset:3px}button{font:inherit;cursor:pointer}.wrap{width:min(1160px,calc(100% - 48px));margin-inline:auto}.skip{position:absolute;left:-9999px;z-index:20000;background:white;padding:8px}.skip:focus{left:12px;top:12px}.site-head{position:sticky;top:0;z-index:1000;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 3px 14px #244c780b}.nav-container{max-width:1208px;margin:auto;padding:0 24px;min-height:70px;display:flex;align-items:center;gap:22px}.brand{display:inline-flex;align-items:center;flex:0 0 auto;white-space:nowrap}.brand img{display:block;max-height:38px;width:auto;max-width:160px;object-fit:contain}.brand-fallback{font-weight:900;color:var(--deep);font-size:24px;line-height:1;letter-spacing:.5px}.brand-fallback span:last-child{color:var(--purple)}.brand-spark{color:var(--gold)!important;margin-right:3px}.desktop-nav{display:flex;flex:1;gap:23px;justify-content:center;align-items:center;min-width:0}.desktop-nav a{font-size:14px;white-space:nowrap;line-height:68px;border-bottom:2px solid transparent}.desktop-nav a.active,.desktop-nav a:hover{color:var(--blue);border-bottom-color:var(--blue)}.main-btn{display:inline-flex;align-items:center;justify-content:center;min-width:82px;height:40px;padding:0 18px;border-radius:99px;background:linear-gradient(135deg,#53C2F2,#2AA9E0 55%,#6B4FAF);color:#fff!important;font-weight:700;line-height:1.2;white-space:nowrap}.main-btn:hover{filter:brightness(.95)}.channel-strip{background:var(--pale);border-bottom:1px solid var(--line)}.channel-inner{max-width:1160px;min-height:44px;margin:auto;display:flex;align-items:center;gap:31px;padding:0 24px;overflow-x:auto;scrollbar-width:thin}.channel-inner a{white-space:nowrap;font-size:14px;color:#58718E}.channel-inner a.active,.channel-inner a:hover{color:var(--blue)}.menu-toggle{display:none;width:35px;height:35px;padding:7px;background:none;border:0;flex-direction:column;justify-content:space-around}.menu-toggle span{display:block;background:var(--deep);width:100%;height:2px}.site-main{min-height:55vh}.hero{padding:38px 0 14px}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:28px}.eyebrow{font-size:13px;color:var(--purple);letter-spacing:2px;font-weight:800}.hero h1{color:var(--heading);font-size:36px;line-height:1.3;margin:12px 0 20px}.hero p{max-width:650px;margin:0 0 18px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.ghost-btn{display:inline-flex;align-items:center;min-height:40px;border:1px solid #aadff5;border-radius:99px;padding:0 19px;background:white;font-weight:700}.media{display:flex;align-items:center;justify-content:center;max-width:100%;background:var(--pale);border:1px solid var(--line);border-radius:13px;overflow:hidden}.media img{display:block;width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain;object-position:center}.media-banner{aspect-ratio:16/7}.media-wide{aspect-ratio:16/9}.media-square{aspect-ratio:1/1}.media-device{aspect-ratio:9/16;max-width:230px;margin-inline:auto}.media-placeholder{background:linear-gradient(130deg,#e7f6ff,#f4faff 53%,#e4f2ff);color:#b4d9ec}.media-placeholder span{font-size:32px}.section{margin-top:40px}.section-head{display:flex;justify-content:space-between;align-items:baseline;gap:15px;margin-bottom:17px}.section h2,.section-head h2{font-size:25px;line-height:1.4;color:var(--heading);margin:0 0 17px}.section-head h2{margin:0}.more{font-size:14px;white-space:nowrap;color:var(--blue)}.grid{display:grid;gap:18px}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.card{border-radius:13px;border:1px solid var(--line);background:white;padding:22px;box-shadow:0 5px 20px #244c7809;min-width:0}.card h3{font-size:18px;color:var(--heading);margin:0 0 8px;line-height:1.5}.card p{font-size:15px;margin:0 0 10px;line-height:1.8}.card .more{font-weight:700}.mini-icon{display:inline-flex;width:37px;height:37px;border-radius:11px;background:var(--pale);color:var(--blue);align-items:center;justify-content:center;font-size:22px;margin-bottom:12px}.split{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:center}.split .text-panel{padding:8px 5px}.split h3{font-size:22px;line-height:1.5;color:var(--heading);margin:0 0 12px}.split p{margin:0 0 14px}.feature-list{padding:0;margin:5px 0;list-style:none}.feature-list li{padding:11px 0;border-bottom:1px solid var(--line)}.feature-list li::before{content:'↗';color:var(--blue);margin-right:10px}.num-list{counter-reset:news;list-style:none;padding:0;margin:0}.num-list li{counter-increment:news;border-bottom:1px solid var(--line);padding:15px 6px;display:flex;gap:18px}.num-list li::before{content:counter(news,decimal-leading-zero);color:var(--blue);font-weight:800;font-size:20px;line-height:1.3}.num-list strong{display:block;color:var(--heading)}.num-list p{margin:4px 0 0;font-size:14px}.soft-panel{background:#eaf7ff;border:1px solid var(--line);border-radius:13px;padding:26px}.soft-panel p:last-child{margin-bottom:0}.warning{font-size:14px;padding:17px 20px;border-left:3px solid var(--gold);background:#fff;border-radius:0 12px 12px 0}.article-wrap{padding-top:35px;padding-bottom:22px}.breadcrumbs{font-size:13px;color:var(--muted);margin-bottom:18px}.breadcrumbs a{color:var(--muted)}.article-hero{background:linear-gradient(135deg,#fff,#eef8ff);border:1px solid var(--line);border-radius:14px;padding:29px 32px}.article-hero h1{font-size:32px;line-height:1.36;color:var(--heading);margin:8px 0 12px}.article-hero p{margin:0;color:#48647e}.article-layout{display:grid;grid-template-columns:minmax(0,800px) 1fr;gap:26px;align-items:start;margin-top:25px}.article-body{background:#fff;border-radius:14px;border:1px solid var(--line);padding:30px}.article-body h2{margin:30px 0 13px;color:var(--heading);font-size:23px;line-height:1.4}.article-body h2:first-child{margin-top:0}.article-body p{margin:0 0 17px;font-size:16px;line-height:1.83}.article-body .media{margin:20px 0 25px}.side-panel{position:sticky;top:112px;background:#fff;border:1px solid var(--line);border-radius:13px;padding:22px}.side-panel h2{margin:0 0 12px;color:var(--heading);font-size:19px}.side-panel a{display:block;border-bottom:1px solid var(--line);padding:10px 0;font-size:14px}.side-panel a:last-child{border:0}.taglinks{display:flex;gap:10px;flex-wrap:wrap;margin:26px 0 6px}.taglinks a{background:var(--pale);padding:7px 14px;border-radius:99px;font-size:14px}.faq-list{display:grid;gap:12px;margin-top:20px}.faq-list details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 18px}.faq-list summary{font-weight:700;cursor:pointer;color:var(--heading)}.faq-list p{margin-bottom:0}.gallery-grid .card{padding:12px}.gallery-grid .card h3{margin:10px 8px 4px}.gallery-grid .card p{margin:0 8px 10px}.mobile-bottom{display:none}.site-footer{background:#16324F;color:#E8F5FF;margin-top:54px;padding-top:42px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}.footer-grid h2{font-size:17px;color:#fff;margin:0 0 12px}.footer-grid a:not(.footer-brand){display:block;color:#d6e8f5;font-size:14px;padding:3px 0}.footer-grid a:hover{color:#fff}.footer-grid p{color:#c5ddeb;font-size:14px}.footer-brand .brand-fallback{color:#fff}.footer-bottom{display:flex;justify-content:space-between;gap:24px;align-items:center;padding:20px 0;margin-top:28px;border-top:1px solid #ffffff26;font-size:12px;color:#d3e5f2}.backtop{position:fixed;right:17px;bottom:20px;z-index:950;background:var(--blue);color:white;border:0;width:40px;height:40px;border-radius:50%;font-weight:bold;display:none;box-shadow:0 4px 15px #2257a944}.backtop.visible{display:block}.drawer-mask,.mobile-drawer{display:none}
@media(max-width:1100px){.desktop-nav{gap:13px}.nav-container{gap:14px}.desktop-nav a{font-size:13px}}
@media(max-width:980px){.desktop-nav{display:none}.menu-toggle{display:flex}.nav-container{min-height:58px;justify-content:space-between;gap:8px;padding:0 20px}.nav-container>.brand{position:absolute;left:50%;transform:translateX(-50%)}.nav-container .brand img{max-height:29px;max-width:135px}.nav-container .brand-fallback{font-size:21px}.register{min-width:67px;height:36px;padding:0 12px;font-size:14px}.channel-inner{padding:0 20px}.drawer-mask{display:block;position:fixed;inset:0;background:rgba(28,73,114,.36);z-index:11000;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s}.drawer-mask.is-visible{opacity:1;visibility:visible;pointer-events:auto}.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);height:100vh;height:100dvh;overflow-y:auto;background:#fff;z-index:12000;transform:translateX(-105%);visibility:hidden;pointer-events:none;transition:transform .2s ease,visibility .2s}.mobile-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-open{overflow:hidden}.drawer-top{display:flex;align-items:center;justify-content:space-between;background:#16324F;padding:15px;gap:6px}.drawer-top .brand img{max-height:30px}.drawer-top .brand-fallback{color:white;font-size:22px}.drawer-top button{background:transparent;border:0;color:white;font-size:32px;line-height:1;width:34px}.drawer-content{padding:10px 20px 26px}.drawer-group h2{font-size:14px;margin:20px 0 6px;color:var(--purple)}.drawer-group a{display:block;padding:8px 10px;border-radius:8px;font-size:14px}.drawer-group a.active{background:var(--pale);color:var(--blue)}.mobile-bottom{position:fixed;bottom:0;left:0;right:0;z-index:1000;height:60px;background:#fff;display:grid;grid-template-columns:repeat(4,1fr);align-items:center;border-top:1px solid var(--line);box-shadow:0 -3px 12px #244c7810}.mobile-bottom a{text-align:center;font-weight:700;font-size:13px;color:var(--deep);padding:15px 2px}.mobile-bottom a.active{color:var(--blue)}body{padding-bottom:60px}.backtop{bottom:74px}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.article-layout{grid-template-columns:minmax(0,1fr)}.side-panel{position:static}.article-body{max-width:none}}
@media(max-width:767px){.wrap{width:calc(100% - 32px)}.hero{padding-top:24px}.hero-grid,.split{grid-template-columns:1fr}.hero h1{font-size:28px}.hero .media{max-height:260px}.section{margin-top:28px}.section h2,.section-head h2{font-size:21px}.grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.article-wrap{padding-top:24px}.article-hero{padding:22px 20px}.article-hero h1{font-size:26px}.article-body{padding:22px 18px}.article-body p{font-size:15px}.article-body h2{font-size:21px}.footer-grid{gap:25px}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:6px}}
@media(max-width:430px){.nav-container{padding:0 12px}.channel-inner{gap:22px}.grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.card{padding:14px}.card h3{font-size:16px}.card p{font-size:14px}.mini-icon{width:31px;height:31px}.hero h1{font-size:26px}.grid-2{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:17px}.footer-grid h2{font-size:15px}.footer-grid a:not(.footer-brand){font-size:13px}.media-device{max-height:330px}}
@media(max-width:340px){.brand-fallback{font-size:18px!important}.main-btn.register{min-width:58px;padding:0 9px}.menu-toggle{width:31px}.article-hero h1{font-size:23px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}